Driving mechanism fob truck-body hoists



G. A. WOOD.

i DRIVING ME-CHANISM FDR TRUCK BDY HOISTS.

APPLICTION FILED DEC. 23.19I8.

1 ,325,661 Patented Dec. 23, 1919.

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DRIVING MECHANISM FUR TRUCK BODY HOISTS.

Prucmon man Dsc. 2s, 191B.

Patented nec. 23,1919.

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DHWNG MCHANISM FOR TRUCK BODY HOISTS.

APPLICAUGM FILED DEC. 23. 191B.

Patented' Dec. 23, 1919.

4 SHEETS-SHEET 3- G. A. WOOD. DRn/mc MECHANISM Fon TRUCK BODY Hcuss.

APPLICATION FILED DEC. 23, l9l8.

Patented DBO. 23,1919.

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Ilm m GARFIELD A. WOOD. OF ALGONAC, MICHIGAN.

DRIVING MECHANISM FOR TRUCKBODY HOISTS.

Specification of Letters Patent.

Patented Dee. 23, 1919.

Application tiled December 23. 1918. Serial No. 268,008.

To all Pimm t muy conf-cru:

Be it known that l, (harman Woon. a citizen of the United States, andresiding at Algonac, in the county of Macomb and State ot' Michigan,have invented a new and 1m )roved Driving Mechanism l'or Truck- IiodyHoists, of which the following is a specification. l

The present invention relates to motor vehicles, more particularly tomeans whereby an auxiliary mechanism or element, such as the pmnp otahydraulic body-tilting unit, may be driven from the transmission, andit. is in the nature ot' an improvement over those described and claimedin my applications for U. S. Letters Patent S. N. 142,405, tiled Jan.l5, 1917, and. 176,459 tiled June 233, 191i'. Its aim is to providemeans of such nature as to permit ot' nso with a minimum change in thevarious installations tonnd in practice.

It will be understood that the body tilting unit is generally furnishedby one manut'ac4 tui-er whereas the trncl: chassis to which it is to beapplied are built by many dili'erent parties, and vary widely in sin,proportion and relation ot' essential parts,

'lhe `invention consists in a @ransmission casing having a removablecasing element through which access to the interior may be had and a.gear carried by the casing element anddriven by a gear on thecounter-shaft ot' the transmission, through which power may be appliedfordriving a hoisting mechanism or the like, such. for example, as the pump of a hydraulic body tilting mechanism.

Again, the invention consists in a transmission casing having acolintershaft projecting therefrom and carrying a gear exterior to thecasing in eombinatioi'i with a gear housing separate from the easing andmounted thereon and carrying a gear driven by the eountershaft gear; italso cons' ts in a hydraulic hoisting mechanism comprising a pumpsupport depending below the upper edge of the Side bars ot' a truck andcarrying a pump driven by the last named gear to gether with meanssupported by the pump support t'or establishing driving connectionbetween the gears at will.

Another feature ot the invention lies in the provision of a gear housingwhich may be attached to thetransmission casing in various positions ofangular adjustment about the axisot' the countershaft, whereby thedevice is rendered applicable to dill'erent installations whereinclearance may not always be available when the parts are assembled inthe same angular relation.

The invention also consists in certain means for attaching theeountershaft gear to, th@ countershaft whereby the gear may be readilyaccommodated to projecting countershat't ends of different lengths.

The invention further consists in variousl details of construction andrelationships ot parts shown, described and pointed ont in .Y theclaims.

In the drawings, Fi ure 1 isa side view showing a dump vehic e whereinthe invention is embodied. Fig. 2 is an enlarged fragmentary section onabout the line 2-2 ot' Fig. l. Figs. 3 and 3 are similar sections, thepump being differently arranged. Fig. l is a longitudinal sectioncorresponding to Fig. 2, parts being broken away. Fig. l is a section onthe line 4l of Fig. l, parts being broken away. Fig. 5 is aAlongitudinal section showing the preferred manner of attaching thedriving gear to the end ot' the transmission counter-shaft. Fig. l is aView looking from the right in Fig. 5. Fig. 7 is a plan Viewcorresponding to Fig. l. Fig. S is an enlarged fragmentary view on aboutthe line 8&8 ot' Fig. l. Fig. t) is a side View corresponding to Fig. H,parts being broken away. Fig. l() is a traginentary longitudinalsection, parts heilig broken away, showing ainmlification. Fig. 11 is afragmentary transverse section on' the line 11-1l of Fig. 1I).

Referring particularly to Fig, 1, 1 indicates the frame of a motorvehicle on which the body 2 is tiltahle about pivots 3 by means ot thehydraulic jack or hoist 4. The usual internal combustion engine appearsat 5. and connected thereto is the transmission casing (i from which theengine shaft projects rearwardly at 7 for connes-.100 tion to thepropeller shaft 8 by means ot' the nmiversal -ioint il. The transmissioneasing also carries a conntershaft 4) the rearend loot' whichprojectsont through a removable casing section consisting, in 105 thisinstance, in a gland or gland cover 1? which is finished at l2 to hearon the r wall ot the. casing and has the reduced tail pering portion 13and is detachahly secure( to the casing, preferably by means of cap.

screws 14 equally spaced angularly about the shaft 10. In the embodimentshown, the front cross bar 18, whereon the base 19 of the hoistingcylinder rests, carries the depend ing member 20, preferably of angleiron, on the longer end of which the gear pump 21 is mounted by means ofthe cap screws 22, said pump serving to draw oil from the upper endportion of .the cylinder through the suction pipe '23 and expel it intothe base thereof through the rassure pipe 24. The parts thus far descried are of well known construction, it being understood, however, thatthe member corresponding to theelev ment 11-13 and found in initialequipment may have to be replaced by another having a tapering neck 13of proper shape and size.

The shaft 10 has a reduced end portion 28. Fig. 5, of non-circularcross-section, the length, shape andlsize of which mav vary considerablyin the dillerent makes of transmissions; moreover, the material of whichthese shafts are made is ordinarily hard and difiicult to work which,together with other considerations. renders it inadvisable to make anychange in the shaft after the transmission is completed. The shaft isalso tapped to receive a cap screw 29. For reasons which will be morefully pointed out hereinafter, it is desirable to secure a gear on saidshaft end at a predetermined distance from the surface 1'2 and, whilethis may be done in dillerent ways. 1 prefer to provide a bushing 3()which is ada ted to be clamped against the shoulder' 31 y means of thecap screw 29, washer 32 and lock washer 33, and which is of an externaldiameter corresponding to the internal diameter of a gear 34.

By cutting oil" tlie front end of the busliiiig to a proper length andby drilling a series of keyways therein to a proper depth, and bythereafter eening or pressing the inet-al ot' the bus ing over on thefront face of the gear at il?) and pressing the endsl of the keys 37 at38-395 it is evident that the gear is rigidly ahd readily secured inplace. That is, all changes necessary to properly position the gear 34are made by variations in the bushing. 'and are of a nature that permitsthe work to berdone Without special equipment.

Surrounding the neck 13 and retained thereon b v the same cap screws 14which hold the clement 11-13 in place on the transmission casing is aring 4() that constitutes a hase for and is formed integrrlly with' agear housing 4l wherein two alined bearings 42--13 i'or the shaft 44 arecarried. Preferably the fnont end of the 'bearing 42 is closed at 45 bythe housing, and the beari f 43 is held in place by the nut 46, while luirisation is attained through the medium of grease cups 48. The shaft44.- carries a gear 49 keyed or otherwise Vfixed thereon and isshiftable longitudinally of the gear 34 to engage or disengage the gear49 therefrom at will.

The driving shaft for the pump gears appears at 50, (Fig. 4); itprojects into and supports a hollow shaft section 51 slidable thereonbut non-rotatable in respect thereto, and the latter has the s herlcalend 52 through which the cross bo t 53 passes, In a somewhat similarmanner the shaft 44 is received in a hollow shaft section 54 rigidlysecured thereonas b means of a key 55 and set screw :B6- ant havin itsspherical rear end 58 traversed by t e cross bolt 60. In applying thedevice to the different truck installations, the distance from the pumpto the transmission is subject to considerable variation, a conditionwhich is conveniently met -by siin ly cutting off one end of the tubinor hol ow shaft section 61 to proper lengt It will be understood thatthe holes 62--63 -formed in the tubing for the cross bolts' are ofsomewhat larger diameter than the latter, thus allowing universalmovement at each 'oint.

Various means may e employed for establishing and breaking drivingconnec- 'tion between the parts. '1, prefer, however,

to shift the shafting bodily and preferably employ for this purpose ayoke G5 the arms of which have end portions 66 :that travel in thegroove 68 in the section 51. At its opposite end 69, the yoke ispreferably spherical and is supported for play in all directions in thebracket or housin 70 which is attached to the member 20 y cap screws 71;the mid-portion of the yoke is reduced at 72 andis embraced by thedivided end `73 of an operating lever 74 that is, in turn pivoted on thebracket 70 at 75, Fig. 4. in case space 1S not available forthe lever inthe position shown, it may he pivoted to the bracket at 76, (see Fig.10) but it is desirable, in any event, that' the parts be so arranged asto cause the weight of the u wardly extendingr operating link 78,shouiil the latter be shaken free in traveling, to tend to maintain thegears disengaged.

It will be observed that the control means for establishing or breakingdriving relation between the shafts 10 and 44 is independent of anycontrol means for the various gears (not shown) of the transmissionproper.

Space not being available in some iiistances for li ting the pump asshown in Fig. 2. it may e placed in the manner indicated in either Fi 3or 3, the change being readily accomino( ated by shifting the housing 41ninety degrees about the axis of the shaft 10, which is ermitted by theequal an 'ular spacing of t ie cap screws 14.

n the embodiment of the invention which appears in Figs. 10 and 11, thetransmission casin 80 is finished opposite a reverse idler or ot 1ergear 81 on the coiintershaft 82 to iso i form an opening which may beclosed by a cover plate (not shown, but held iu place by cap screws S3)in the event it is not desired to drive an auxiliary unit. Upon re`movingir the cover plate it 1s evident that the cap screws 83 may beutilized to likewise secure the supplemental gear housing Si. whereinthe shaft 85 `and gear SG, that corre.- s )ond to the-shaft 44 and gear49,' are slidable and rotatably mounted. The gear 81 and countershaft S2correspond to the gear 3l and shaft 10, and the remaining parts may beduplicates of similar elements heretofore described and are thereforegiven the same refelenee charia-tels.

The. mnstruetions described are .inexpensive, easily applied` andadmirably meet the -|nan v dilerent conditions encountered in -pract|ce.and wlnle I regard them as the nlost desirable emhodimentsof myinvention. it is obvious that many changes may he. made withoutdeparting l'rom the spirit of my iuvention; for exam ile` the mnuber11-13 may.in some cases e integral with the element 41. l do not,therefore. wish to be limited except as indicated h v the lsnbjoinedclaims.

l claim:

1. A motor vehicle comprising: a frame. a gear box, a rotatablecountershalt for the gear box, a rotatable member spaced from the gearbox longitudinally ol the frame. means, independent of the gear box forsu pporting the rotatable member from the frame, shafting through whichtorque. for driving the rotatable member from the countershatt islral'lsmitled, a gear on the eoun tershaft and a second gar on thi`shal'ling; adapted to mesh with the lirst named gear. housing means forthe second gear supported by the gear box, and means` carried by Ihemeans for supportingr the rotatable mein bei. for shifting one ol` saidfears to or l'rom mesh with the other at will.

2. ln combination with the l'rame ol' a. motor vehicle and a support.extending across the frame and dependiner therefrom1 a pump carried b vthe. support, a Iransmission forward from the support and inA chilling;ra casing and a -onntershal't gear. a second rear adapted to mesh withthe conntershaft gear. shalling for driving the pump from the secondgear. and means. including: a lever carried h v the support. l'orshifting the second gear to or from mesh with the conntershat't gear atwill.

3. In a lnotor vehicle. a transmission, a cross-support spaced from thetransmissionlongitudinally of the vehicle and including;r a dependingclement. a pump carried by said element on one side thereof. said pumpincluding a casing, a shalt projecting.'` therefrom longitudinally olthe vehicle. the transmission including a rotatable drivingr member,longitudinally shiftable means through which driving;v connectionbetween the driving member aml the pump shaft may be cll'ected at will,a lever of the Second class pivotally supported b v the depending,`elena-nt and havm, y its free end directed toward the pump. aml a secondlever engaging the, lirst mentioned lever intermediate its ends forshil'tinplr said shiftable means to make or break said drivingconnections at will.

l. In combination willi a frame of a motor vehicle aml a cross-supporton said frame, said eross-suplmrt including a depending' element. a pumpixed to one side of said element.` a bracket separate from the pump andalso carried b v said element, said pump includimer a projecting shaft.means for driving; said shaft, means for controlling said shaft drivingmeans, said controlliner means including a lever of the second classhaving.r one. end hearing in said bracket, and a second level'eugafgingr the first mentioned lever at a point intermediate in thelength of the latter.

5. Ina motor vehiele,a transn'iissioncasing 90 having a couutersha'l'tprojectingr therefrom. a gear on the eimntershaft exterior to theeasing. a detachable casing section through which which thecounteishat't passes. said section being eonslrmted und arranged to hesecured to the casing in any one of a pluralit)` ol positions`angfularly about the axis of ythe counlershat't. a shaft carried bysaid casing section and olfset from the countershaft, and a gear on theoll'set shaft meshing with the gear on the couutershaft.

(i. In a motor vehicle. a transmission Vincluding a iamntershaft and aeasing'. said easing;r including a removable. element through which thecounlershaft passes, a. gear ou the countershal't outside ol' saidelement, housing means rigid with said elemenha sha fl carried b v thehousingr means and haring a gear thereon. said gear hein,' r adapted tomesh with the gear on the coun- 1l0 tershat't.

T. In combination with a. transmission proper ini-India.;r a casing anda drivin;r shaft supported thereby and projecting therefrom. a ,errarhousing, means for de- 115 tachably securing.;r the housing on theeasing. said means hein;r so constructed and arranged that the housin; rma)` be secured in any one of a plurality of positions angularly aboutthe axis of the shaft, a second shaft carried by the housing. a gear onthe second shaft. and a gear on the lirst shaft. meshing with the gearon the. second lshaft.

h'. ln combination with a. transmission easing: and a driven shaftprojecting: therefrom. a gear mounted on the shaft exterior to thecasio". a gear lions-iner delachahly se. cured lo the easing. a shaltsupported hy the housing aml slidable parallel to the lirst named shaft,a gear on the sim-ond shaft adapted to mesh with the first gear or to bedisengaged therefrom depending on the position of the second shaft.

9. 1n combination with :l transmission casing having an opening in onen'nll thereof, :L driven geen' thereln registering with said opening, ndetachable gear 'housing mounted on the casing around the opening, ashaft carried by the housing, :L geur on said shaft adapted to bebrought into mesh or shifted out of mesh with the first named" geur,shutting driven by said shaft und hatving universal movement in respectthereto, und means, acting' through'sud slmfting, for shifting thesecond mentioned gea to or from mesh with the first geur at will.

GARFIELD A. WOOD

